| 1. | Ectoderm | 2. | Mesoderm |
| 3. | Endoderm | 4. | All three germ layers |
To obtain a standard ECG, a patient is connected to the machine with three electrical leads including all the following except:
| 1. | One to right wrist | 2. | One to left wrist |
| 3. | One to right ankle | 4. | One to left ankle |
| 1. | ventricular filling. |
| 2. | the atrioventricular valves to close, and then the semilunar valves to open. |
| 3. | the semilunar valves to close, and then the atrioventricular valves to open. |
| 4. | pressure to become greater in the aorta and pulmonary trunk than in the ventricles. |
| 1. | I and III only | 2. | I and II only |
| 3. | II and IV only | 4. | II and III only |
| I: | Pulmonary circulation carries deoxygenated blood to the lungs and brings oxygenated blood back to the heart. |
| II: | The systemic circulation provides nutrients, oxygen and other essential substances to the tissues and takes carbon dioxide and other harmful substances away for elimination. |
| I. | Sympathetic neural signals |
| II. | Adrenal cortical hormones |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Match the items given in Column I with those in Column II and select the correct option given below:
| Column I | Column II | ||
| a. | Tricuspid valve | (i) | Between left atrium and left ventricle |
| b. | Bicuspid valve | (ii) | Between right ventricle and pulmonary artery |
| c. | Semilunar valve | (iii) | Between right atrium and right ventricle |
| a | b | c | |
| 1. | iii | i | ii |
| 2. | i | iii | ii |
| 3. | i | ii | iii |
| 4. | ii | i | iii |
The hepatic portal vein drains blood to liver from:
| 1. Stomach | 2. Kidneys |
| 3. Intestine | 4. Heart |
A four chambered heart is not seen in:
| 1. | Amphibians | 2. | Crocodiles |
| 3. | Birds | 4. | Mammals |
| 1. | is a bone marrow stem cells committed to produce RBCs |
| 2. | is the megakaryocyte |
| 3. | is the commonest WBC and is phagocytic |
| 4. | is responsible for acquired immunity in humans |